diff options
Diffstat (limited to 'archive/hge/CxImage/ximawbmp.cpp')
| -rw-r--r-- | archive/hge/CxImage/ximawbmp.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/archive/hge/CxImage/ximawbmp.cpp b/archive/hge/CxImage/ximawbmp.cpp new file mode 100644 index 0000000..7ba5d00 --- /dev/null +++ b/archive/hge/CxImage/ximawbmp.cpp @@ -0,0 +1,134 @@ +/*
+ * File: ximawbmp.cpp
+ * Purpose: Platform Independent WBMP Image Class Loader and Writer
+ * 12/Jul/2002 Davide Pizzolato - www.xdp.it
+ * CxImage version 7.0.0 31/Dec/2010
+ */
+
+#include "ximawbmp.h"
+
+#if CXIMAGE_SUPPORT_WBMP
+
+#include "ximaiter.h"
+
+////////////////////////////////////////////////////////////////////////////////
+#if CXIMAGE_SUPPORT_DECODE
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageWBMP::Decode(CxFile *hFile)
+{
+ if (hFile == NULL) return false;
+
+ WBMPHEADER wbmpHead;
+
+ cx_try
+ {
+ ReadOctet(hFile, &wbmpHead.Type);
+
+ uint32_t dat;
+ ReadOctet(hFile, &dat);
+ wbmpHead.FixHeader = (uint8_t)dat;
+
+ ReadOctet(hFile, &wbmpHead.ImageWidth);
+ ReadOctet(hFile, &wbmpHead.ImageHeight);
+
+ if (hFile->Eof())
+ cx_throw("Not a WBMP");
+
+ if (wbmpHead.Type != 0)
+ cx_throw("Unsupported WBMP type");
+
+ head.biWidth = wbmpHead.ImageWidth;
+ head.biHeight= wbmpHead.ImageHeight;
+
+ if (head.biWidth<=0 || head.biHeight<=0)
+ cx_throw("Corrupted WBMP");
+
+ if (info.nEscape == -1){
+ info.dwType = CXIMAGE_FORMAT_WBMP;
+ return true;
+ }
+
+ Create(head.biWidth, head.biHeight, 1, CXIMAGE_FORMAT_WBMP);
+ if (!IsValid()) cx_throw("WBMP Create failed");
+ SetGrayPalette();
+
+ int32_t linewidth=(head.biWidth+7)/8;
+ CImageIterator iter(this);
+ iter.Upset();
+ for (int32_t y=0; y < head.biHeight; y++){
+ hFile->Read(iter.GetRow(),linewidth,1);
+ iter.PrevRow();
+ }
+
+ } cx_catch {
+ if (strcmp(message,"")) strncpy(info.szLastError,message,255);
+ return FALSE;
+ }
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageWBMP::ReadOctet(CxFile * hFile, uint32_t *data)
+{
+ uint8_t c;
+ *data = 0;
+ do {
+ if (hFile->Eof()) return false;
+ c = (uint8_t)hFile->GetC();
+ *data <<= 7;
+ *data |= (c & 0x7F);
+ } while ((c&0x80)!=0);
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif //CXIMAGE_SUPPORT_DECODE
+////////////////////////////////////////////////////////////////////////////////
+#if CXIMAGE_SUPPORT_ENCODE
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageWBMP::Encode(CxFile * hFile)
+{
+ if (EncodeSafeCheck(hFile)) return false;
+
+ //check format limits
+ if (head.biBitCount!=1){
+ strcpy(info.szLastError,"Can't save this image as WBMP");
+ return false;
+ }
+
+ WBMPHEADER wbmpHead;
+ wbmpHead.Type=0;
+ wbmpHead.FixHeader=0;
+ wbmpHead.ImageWidth=head.biWidth;
+ wbmpHead.ImageHeight=head.biHeight;
+
+ // Write the file header
+ hFile->PutC('\0');
+ hFile->PutC('\0');
+ WriteOctet(hFile,wbmpHead.ImageWidth);
+ WriteOctet(hFile,wbmpHead.ImageHeight);
+ // Write the pixels
+ int32_t linewidth=(wbmpHead.ImageWidth+7)/8;
+ CImageIterator iter(this);
+ iter.Upset();
+ for (uint32_t y=0; y < wbmpHead.ImageHeight; y++){
+ hFile->Write(iter.GetRow(),linewidth,1);
+ iter.PrevRow();
+ }
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageWBMP::WriteOctet(CxFile * hFile, const uint32_t data)
+{
+ int32_t ns = 0;
+ while (data>>(ns+7)) ns+=7;
+ while (ns>0){
+ if (!hFile->PutC(0x80 | (uint8_t)(data>>ns))) return false;
+ ns-=7;
+ }
+ if (!(hFile->PutC((uint8_t)(0x7F & data)))) return false;
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif // CXIMAGE_SUPPORT_ENCODE
+////////////////////////////////////////////////////////////////////////////////
+#endif // CXIMAGE_SUPPORT_WBMP
+
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